My site was offered a free domain name from forumotion, and so we accepted it. When it came time to renew it, we raised some funds, but we didn't have enough, and so we decided to let it expire, for now. But for some reason, the domain won't fully expire: when new users register for our site, they get activation links that include the old domain name. In other words, they can't sign up, because these activation links lead to a domain that no longer exists.

This is very frustrating and we've looked all through the Admin Panel without being able to find out the origin of this error. The variable FORUMLINK also connects users to the now expired URL. Is there anything that we can do or is there a problem with the system?

Could you change the new account activation to Admin & you could activate the users.

I will ask Leeloo, what she knows about this.

Edit: Also, what do you see here?General>Forum>Forum AddressPersonalized domain name tabCan you post the screenshot of it?If it shows Force the URL redirection : Choose NO & Save.See if that changes anything?